Originally scheduled for last weekend at River's Monumental stadium in Buenos Aires, it was postponed after some Boca players were injured when their team bus came under attack from their arch rivals' fans throwing projectiles.

Boca appealed to Conmebol's independent disciplinary committee to be awarded the trophy and have River expelled from the competition, but that was also rejected on Thursday.

Instead, Conmebol hit River with a two-game stadium closure "that will be applied from 2019" in official continental competitions, and "a $400,000 [Dh1.47 million] fine".

In a separate statement issued late Thursday, Boca Juniors said it "did not share" the arguments of the Conmebol disciplinary panel and planned to appeal.

Conmebol president Alejandro Dominguez said that Madrid president Florentino Perez had offered use of the Bernabeu "for free".

"Madrid is the city with the biggest Argentine population in the world, outside Argentina," Dominguez said.

"It's the 10th safest city in the world, it has the airport with the greatest connectivity, and it's a city with a football tradition."

'No place for hooligans'

He added that fans of both teams would be admitted to the Bernabeu, something that was not the case for the original clash.

Away fans have been barred from stadiums in Argentina since 2013 due to football-related violence that has seen more than 300 people killed in the last 50 years, according to one charity.

Dominguez had a message to the hooligans, known as barrabravas in Argentina, should they be thinking off attending the match.

"The 'barras' should not even dream of going. There is no place for them.

"I'm sure the message that the fans are going to send is what the world is waiting for: that the good guys are going to win this time."

Several Boca players suffered cuts from broken glass and the effects of smoke inhalation following the bus attack on Saturday.

While Conmebol initially insisted the match would go ahead, the two sides' presidents agreed to postpone the second leg for 24 hours.

But a day later, Boca refused to play again, insisting they would be disadvantaged, and the match was indefinitely postponed.

On Monday, Boca petitioned Conmebol to be awarded the victory but a day later, the governing body said the match would go ahead "outside Argentina".

The Buenos Aires rivals drew their first leg in early November at Boca's famous Bombonera arena 2-2.

Video grab showing supporters of River Plate burning a t-shirt with the badge of Boca Juniors in the surroundings of the Monumental stadium in Buenos Aires following an attack on the Boca team bus before the all-Argentine Copa Libertadores second leg final match between River Plate and Boca Juniors. AFP

River Plate fans clash with riot police after the match was postponed. Reuters

A fan of River Plate after the match was postponed. Reuters

Video grab showing a cordon of riot police during clashes with supporters of River Plate. AFP

Video grab showing a supporter of River Plate gesturing at riot police. AFP

A fan of River Plate is detained after the match was postponed. Reuters

Video grab showing detained supporters of River Plate. AFP

Video grab showing a cordon of riot police during clashes with supporters of River Plate. AFP